Holdback device.



W. H. THORNBURG.

HOLDBAOK DEVICE.

APPLICATION FILED DEO.18, 190s.

Patented June 29 WILLIAM H. T HORNBURG, O1 GREENVILLE, ILLINOISIIOIIDBAGK DEVICE.

Specification o1. Letters Patent.

Application filed Decen'iber is, was. Serial No. 468,173.

To all whom it may concern:

Be it known that I, IVILLLAM H ..lnonN- BURG, citizen of the UnitedStates, residing at Greenville, in the county of Bond and State ofIllinois, have invented certain-newand useful Improvements in HoldbackDevices, of which the following is a specification.

The present invention relates to certain new and useful improvements inharness, and

more particularly to a novel hold back device obviates the necessity ofproviding the usual which entirely eliminates the usual b reeching.

The object of the invention is the provision of a device of thischaracter which can be readily applied to a harness, which will operatein an effective manner as a hold back, and which enables a horse orother draft animal to be hitched or unhitched in a comparatively shortspace of time.

For a full understanding of the invention and the/merits thereof andalso to acquire a knowledge of the details of construction and the meansfor effecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is aperspective, view of a hold back device embodying theinvention, Fig, 2 is a side elevation of the same, portions being brokenaway and shown in section, and Fig. 3 is a transverse sectional view onthe line 3 3 of Fig. 2. Fig. 4 is a plan view of a modified form of theshaft receiving ring.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Referring to the drawing the numeral 1 designates the shaft of anordinary vehicle, and 2 a late whichis secured to the shaft, )referaby'at the top thereof. This plate is formed with a series of forwardlyfacing teeth 3 which constitute a rack, and also at its rear end with astop 4. A ring 5 is sli ped over the shaft, the said ring being of sue ia size as to pass over the teeth 3 but to engage the stop 4 so that itcan not be moved rcarwardly beyond the plate 2. The top of the ring 5 isformed with a loop 6 and at the bottom of the ring is a similar loop 7,the said loops being disposed in a plane at right angles to the plane ofthe ring. The upper loop 6 is designed to have the back band of theharness connected thereto while the lower loop 7 is designed to engagethe belly band. 1 A pawl 8 is pivoted to the upper loop 6 and normally dops downwardlytoward the shaft by the action of gravity.- This pawl isdesigned to Patented June 29, 1909.

engage either one of the teeth 3 of the rack or the stop 4 and servesto'prevent rearward movement of the ring upon the shaft.

It will thus be obvious that I have revided an improved hold back devicew. ich

breeching and also enables the draft animal to be quickly hitched andunhitched, there being no breeching straps to be connected to the shaftsand the rings 5 sh )ping freely over the shafts when being eit 101'applied thereto or removed therefrom.

Undeiusome conditions it may be found desirable to employ a hold backstra and the modifications shown in Fig. 4 woul then be employed. thismodification the shaft receiving ring 5 is provided upon its inner and uper ortion with a loop 9 to which-the old back strap can be secured. Inpractice these rings 5 would be made in lofts and rights so It will beobserved that in that the said loops 9 would always be upon the inside.

Having thus described the invention what is claimed as new is: v

In a hold back device, the combination of a shaft, a rack provided ontop of the shaft and consisting of a series of forwardly facing teethterminating at its rear end in a rela: tively' large stop, a ringloosely encirclin the shaft and shdable thereon'over the rec and havingits rearward sliding movement limited by the stop, the'ring beingprovided at points above and below the shaft with outstanding loops forattachment to the harness, and a pawl pivoted to the upper loop andgravity actuated to engage any selected one of the teeth or the stoptomaintainthe ring in longitudinally ad s'uted position. against rearwarddisplacement.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM ll. THORNBURQ. [l.. 8.] W'itnesses:

Josnrn M. BROWN, Jnssn Ewnvo.

